"Authorities were not called to the scene but a police spokesperson tells us the unidentified male victim went to the Peconic Bay Medical Center at noon on Sunday and later filed a complaint alleging assault," E! Online said in their report.

The victim was allegedly knocked out on the cement as the man was just as aggressive, reported TMZ.

A friend of Rennalls, Frank Johnson, saw the fight.

"When you have huge security guards backing you up, you get extra bold. This isn't a macho thing. Justin was talking [bleep] from the safety of his car ... And then it was pandemonium." Reps for Bieber have insisted he was not involved in the incident.

"Justin was not involved in any altercation," a representative told Yahoo.

"At 2:40 a.m. Sunday, Justin Bieber arrived with friends and security at Southampton club South Pointe. They enjoyed the venue and left at 3:20 a.m.," a spokesperson for Southampton club South Pointe told Yahoo.